SCR MCQs Part 3

Electrical Engineering MCQs on SCR – SCR MCQs Part 3

The SCR is made of

The SCR is made of:

1. Carbon
2. Germanium
3. Silicon
4. None of the above

Correct answer: 3. Silicon

If firing angle in SCR circuit is increased, what happens to output

If firing angle in SCR circuit is increased, what happens to output:

1. Will decrease
2. Will increase
3. Will remain the same
4. None of the above

Correct answer: 1. Will decrease

When SCR is OFF, the current in the circuit is

When SCR is OFF, the current in the circuit is:

1. Large leakage current
2. Small leakage current
3. Zero
4. None of the above

Correct answer: 2. Small leakage current

An SCR is made of silicon and not germanium since silicon

An SCR is made of silicon and not germanium since silicon

1. Is inexpensive
2. Is mechanically strong
3. Is tetravalent semiconductor
4. Possesses only small leakage current

Correct answer: 4. Possesses only small leakage current

Number of PN junctions on SCR are

Number of PN junctions on SCR are:

1. Two
2. Three
3. Four
4. Five

Correct answer: 2. Three